（0094）-iOS／iPhone／iPAD／iPod源代码－视图切换（View Transition）-Flip Transf...

##iOS-Flip-Transform Animation component for the effect of flipping as in a news/clock ticker, or a page turn. Structured around the idea of a data object (i.e. headline in news, number in a clock, page in a book) as an animation frame, comprised of multiple CALayers. Supports 3 interaction modes: - __Triggered__: as in a tap to flip - __Auto__: as in a revolving flip that loops through data - __Controlled__: as in a pan gesture that moves the flip layer according to touch Supports different types of content: - _Blank_, with background color - _With image_, whether from file or screenshot - _With dynamic text_, either composited on background or on image ###Basic Usage 1. Create delegate object - `AnimationDelegate *animationDelegate = [[AnimationDelegate alloc] initWithSequenceType: directionType:];` 2. Create flip view (either vertical or horizontal flip animation type) and assign it to animation delegate - `FlipView *flipView = [[FlipView alloc] initWithAnimationType: animationDelegate: frame:];` `animationDelegate.transformView = flipView;` 3. Add flip view as subview and customize properties (refer below for configurable list) 4. Call `[flipView printText: usingImage: backgroundColor: textColor:]` to draw each frame (minimum of 2) 5. Call `[animationDelegate startAnimation:]` to start the animation. For using buttons or pan gesture, look at the animation controller example Note: To remove jagged edges during flipping, set __Renders with edge antialiasing__ in the project plist to YES. This may decrease performance. ###Configurable Properties ####Animation Delegate - __repeatDelay__: Length of time to the next flip after the current flip completes (only for _auto interaction mode_) - __shadow__: Whether or not to display shadow - __repeat__: Whether or not to loop through animation frames (only for _auto interaction mode_) - __sensitivity__: Positive modifier for input to animation response. Higher the sensitivity, greater the response. (only for _controlled interaction mode_) - __gravity__: Positive modifier for speed of movement to nearest resting state after input is removed. Higher the gravity, faster the speed. (only for _controlled interaction mode_) - __perspectiveDepth__: Positive value for adjusting the perspective. Lower the value, greater the illusion of depth. - __nextDuration__: duration of the next flip animation ####FlipView - __textInset__: inset of text relative to the flip view, like border margin - __textOffset__: positioning of text relative to top left of the flip view - __fontSize__: font size - __font__: font string, can be custom or inbuilt, defaults to Helvetica - __fontAlignment__: left, center or right alignment - __textTruncationMode__: none, start, middle or end truncation - __sublayerCornerRadius__: corner radius to apply to each sub panel of the flip view